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Differences What are the advantages of each

Front view of Intel Atom N280

Reasons to consider the
Intel Atom N280

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 1.66 GHz vs 1 GHz More than 65% higher clock speed
More l2 cache 0.5 MB vs 0.25 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly better performance per watt 10.19 pt/W vs 6.69 pt/W More than 50% better performance per watt
Significantly better overclocked clock speed (Air) 1.88 GHz vs 1 GHz Around 90% better overclocked clock speed (Air)
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Slightly lower typical power consumption 2.03W vs 6.5W 3.2x lower typical power consumption
Better overclocked clock speed (Water) 1.67 GHz vs 1 GHz More than 65% better overclocked clock speed (Water)
Slightly lower annual home energy cost 0.6 $/year vs 1.93 $/year 3.2x lower annual home energy cost
Slightly lower annual commercial energy cost 2.19 $/year vs 7.01 $/year 3.2x lower annual commercial energy cost
Front view of AMD Sempron 2100+

Reasons to consider the
AMD Sempron 2100+

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Much better geekbench 3 AES single core score 58,900 MB/s vs 25,750 MB/s More than 2.2x better geekbench 3 AES single core score
Better geekbench 3 Multi-Core score 1,724 vs 536 Around 3.2x better geekbench 3 Multi-Core score

Benchmarks Real world tests of Atom N280 vs Sempron 2100+

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Atom N280
25,750 MB/s
Sempron 2100+
58,900 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Atom N280  vs
Sempron 2100+ 
Clock speed 1.66 GHz 1 GHz
Cores Single core Single core

features

Has a NX bit Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!
Supplemental SSE3

bus

Clock speed 667 MHz 200 MHz

details

Atom N280  vs
Sempron 2100+ 
Threads 2 1
L2 cache 0.5 MB 0.25 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.88 GHz 1 GHz
Overclocked clock speed (Water) 1.67 GHz 1 GHz
Overclocked clock speed (Air) 1.88 GHz 1 GHz

power consumption

TDP 2.5W 8W
Annual home energy cost 0.6 $/year 1.93 $/year
Annual commercial energy cost 2.19 $/year 7.01 $/year
Performance per watt 10.19 pt/W 6.69 pt/W
Typical power consumption 2.03W 6.5W
Intel Atom N280
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AMD Sempron 2100+
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